Need some help with cracking an .msi install file

[Mkz]

Try the following:
- Check for a temp directory where the instalation bootstrap files are located. The dll is probably there, at least if you're stopped at the error box.
- Debug the install process an set ot break o LoadLibrary or on GetProcAddress, it should occur when you press next with an invalid serial.

In a process monitor you won't see the dll in the loaded modules list, because it normally is loaded when the function is called, executed, and then freed - hence the 2 breakpoints I have suggested. The dll isn't actually linked with the installation process, so it's only loaded when needed.